Apparatus for detecting objects in sheet form.

摘要

Apparatus for detecting a sheet in a conveying path (6), comprising a light source (13) and a light receiver (15) on one side of the conveying path (6) and a light-reflecting element in the form of a prism (16) on the other side of the conveying path (6) for reflecting for the light receiver (15) a beam of light emitted by the light source (13). The prism (16) has a first reflecting surface (19) opposite the light source (13) and a second reflecting surface (20) opposite the light receiver (15). A third reflecting surface (18) deflects in the direction of the second reflecting surface (20) the beam of light reflected by the first reflecting surface (19), so that the apparatus is less sensitive to deviations of the position of the prism (16) with respect to the light source (13) and the light receiver (15). <IMAGE>